TY - JOUR AU - L. V. Kuz'min TI - An analog of the Riemann--Hurwitz formula for one type of $l$-extensions of algebraic number fields JO - Izvestiya. Mathematics PY - 1991 SP - 325 EP - 347 VL - 36 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/IM2_1991_36_2_a5/ LA - en ID - IM2_1991_36_2_a5 ER -